CA2384882A1 - Microwave volatiles analyzer with high efficiency cavity - Google Patents

Microwave volatiles analyzer with high efficiency cavity Download PDF

Info

Publication number
CA2384882A1
CA2384882A1 CA002384882A CA2384882A CA2384882A1 CA 2384882 A1 CA2384882 A1 CA 2384882A1 CA 002384882 A CA002384882 A CA 002384882A CA 2384882 A CA2384882 A CA 2384882A CA 2384882 A1 CA2384882 A1 CA 2384882A1
Authority
CA
Canada
Prior art keywords
cavity
high efficiency
analyzer
microwave
balance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002384882A
Other languages
French (fr)
Other versions
CA2384882C (en
Inventor
William Edward Jennings
Matthew Donald Barrett
Edward Earl King
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CEM Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2384882A1 publication Critical patent/CA2384882A1/en
Application granted granted Critical
Publication of CA2384882C publication Critical patent/CA2384882C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
    • G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/04—Investigating moisture content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/44—Sample treatment involving radiation, e.g. heat
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4022—Concentrating samples by thermal techniques; Phase changes
    • G01N2001/4027—Concentrating samples by thermal techniques; Phase changes evaporation leaving a concentrated sample

Abstract

A volatiles analyzer is disclosed that includes a source of microwave radiation that can selectively produce at least one predetermined frequency of microwave radiation. A cavity is in communication with the source. The analyzer includes an analytical pan balance with at least its balance pan in the cavity. The walls of the cavity form a polyhedron that focuses microwave energy of the predetermined frequency on the balance pan while supporting a plurality of TM and TE modes in the cavity.
CA002384882A 1999-09-17 2000-09-16 Microwave volatiles analyzer with high efficiency cavity Expired - Fee Related CA2384882C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/398,129 1999-09-17
US09/398,129 US6320170B1 (en) 1999-09-17 1999-09-17 Microwave volatiles analyzer with high efficiency cavity
PCT/US2000/025199 WO2001020312A2 (en) 1999-09-17 2000-09-16 Microwave volatiles analyzer with high efficiency cavity

Publications (2)

Publication Number Publication Date
CA2384882A1 true CA2384882A1 (en) 2001-03-22
CA2384882C CA2384882C (en) 2006-11-28

Family

ID=23574099

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002384882A Expired - Fee Related CA2384882C (en) 1999-09-17 2000-09-16 Microwave volatiles analyzer with high efficiency cavity

Country Status (6)

Country Link
US (2) US6320170B1 (en)
EP (1) EP1214582B9 (en)
JP (1) JP4777566B2 (en)
AU (1) AU7580400A (en)
CA (1) CA2384882C (en)
WO (1) WO2001020312A2 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6247246B1 (en) * 1998-05-27 2001-06-19 Denver Instrument Company Microwave moisture analyzer: apparatus and method
DE19952215C2 (en) * 1999-10-29 2001-10-31 Roche Diagnostics Gmbh Test element analysis system
US6495825B1 (en) * 1999-12-22 2002-12-17 International Business Machines Corporation Apparatus for photo exposure of materials with subsequent capturing of volatiles for analysis
US6548303B2 (en) 2000-06-23 2003-04-15 Cem Corporation Method and apparatus for rapid fat content determination
US7282184B2 (en) * 2002-04-19 2007-10-16 Cem Corporation Microwave assisted chemical synthesis instrument with controlled pressure release
US7144739B2 (en) * 2002-11-26 2006-12-05 Cem Corporation Pressure measurement and relief for microwave-assisted chemical reactions
US7041947B2 (en) * 2003-09-02 2006-05-09 Cem Corporation Controlled flow instrument for microwave assisted chemistry with high viscosity liquids and heterogeneous mixtures
US6989519B2 (en) * 2003-09-02 2006-01-24 Cem Corporation Controlled flow instrument for microwave assisted chemistry with high viscosity liquids and heterogeneous mixtures
US7307248B2 (en) * 2003-12-09 2007-12-11 Cem Corporation Method and apparatus for microwave assisted high throughput high pressure chemical synthesis
US7405381B2 (en) * 2005-08-23 2008-07-29 Cem, Corporation Real-time imaging and spectroscopy during microwave assisted chemistry
EP1850110A1 (en) * 2006-04-25 2007-10-31 Mettler-Toledo AG Measuring device for gravimetric moisture determination
EP1850111B1 (en) * 2006-04-25 2014-09-10 Mettler-Toledo AG Measuring device for gravimetric moisture determination
EP1912046A1 (en) * 2006-10-11 2008-04-16 Mettler-Toledo AG Gravimetric moisture analyser
CN104181073B (en) * 2014-08-22 2016-08-03 中国农业科学院农产品加工研究所 A kind of dynamic analytical equipment of material volatile material
USD781162S1 (en) * 2015-09-08 2017-03-14 Mettler-Toledo Gmbh Moisture analyzer
US20170074766A1 (en) 2015-09-11 2017-03-16 Cem Corporation Moisture and volatiles analyzer
USD775977S1 (en) * 2015-09-22 2017-01-10 Ohaus Instruments (Changzhou) Co., Ltd Moisture analyzer
JP7263976B2 (en) * 2019-08-21 2023-04-25 株式会社島津製作所 Differential thermal/thermogravimetric simultaneous measurement device
JP1667994S (en) * 2019-11-25 2020-09-14

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252115A (en) 1963-04-08 1966-05-17 Trw Inc Tuning arrangement
US3461261A (en) 1966-10-31 1969-08-12 Du Pont Heating apparatus
US3590201A (en) 1969-05-14 1971-06-29 Aeroquip Corp Photoelectric control systems for brazing tools
US3590202A (en) 1970-02-24 1971-06-29 Bechtel Corp Construction for tuning microwave heating applicator
US3890825A (en) * 1972-07-03 1975-06-24 Hobart Corp Analysis of comminuted meat products
US4457632A (en) 1973-07-20 1984-07-03 Cem Corporation Automatic volatility computer
US4438500A (en) 1973-07-20 1984-03-20 Cem Corporation Rapid volatility analyzer
US4006338A (en) * 1975-12-31 1977-02-01 General Electric Company Microwave heating apparatus with improved multiple couplers and solid state power source
SE416696B (en) 1979-03-19 1981-01-26 Philips Svenska Ab MICROWAG OVEN DEVICES FOR ENERGY INPUT
US4413168A (en) 1980-09-24 1983-11-01 Raytheon Company Heating time coupling factor for microwave oven
US4361744A (en) * 1981-01-12 1982-11-30 Despatch Industries, Inc. Microwave process unit
JPS59178801A (en) 1983-03-29 1984-10-11 Fujitsu Ltd Resonator type power distribution and combination device
CA1270876A (en) 1984-03-22 1990-06-26 Sueaki Honda Push-button lever contact switch
NZ220550A (en) * 1986-06-05 1990-10-26 Nearctic Research Centre Austr Microwave drier cavity: configuration maximises energy in drying zone while minimising energy reflected back to source
US4883570A (en) 1987-06-08 1989-11-28 Research-Cottrell, Inc. Apparatus and method for enhanced chemical processing in high pressure and atmospheric plasmas produced by high frequency electromagnetic waves
WO1989010678A1 (en) * 1988-04-19 1989-11-02 Deakin University Improved microwave treatment apparatus
SE9002117L (en) 1990-06-14 1991-08-26 Nils Elander MICROWAVE DEVICE FOR TREATMENT OF PRECESSIVE LIQUID
FR2672730B1 (en) 1991-02-12 1993-04-23 Thomson Tubes Electroniques MODEL CONVERTER DEVICE AND POWER DIVIDER FOR MICROWAVE TUBE AND MICROWAVE TUBE COMPRISING SUCH A DEVICE.
US5250773A (en) 1991-03-11 1993-10-05 Mcdonnell Douglas Corporation Microwave heating device
FR2685478A1 (en) * 1991-12-23 1993-06-25 Prolabo Sa METHOD OF MEASURING THE TEMPERATURE OF A SAMPLE PLACED IN A CONTAINER OF A MICROWAVE APPLICATION APPARATUS AND APPARATUS IMPLEMENTING SAID METHOD
US5351541A (en) 1992-01-22 1994-10-04 Charles Stark Draper Laboratories Microwave resonator accelerometer
US5632921A (en) * 1995-06-05 1997-05-27 The Rubbright Group, Inc. Cylindrical microwave heating applicator with only two modes
US5725951A (en) 1995-08-28 1998-03-10 Milliken Research Corporation Lubricant and soil release finish for yarns
US5796080A (en) * 1995-10-03 1998-08-18 Cem Corporation Microwave apparatus for controlling power levels in individual multiple cells
DE69730571T2 (en) * 1996-05-17 2005-08-18 Technology Finance Corp. (Pty.) Ltd., Sandton DIELECTRIC HEATING DEVICE
US6072168A (en) * 1996-08-17 2000-06-06 Forschungszentrum Karlsruhe Gmbh Microwave resonator for the high temperature treatment of materials
DE19633245C1 (en) * 1996-08-17 1997-11-27 Karlsruhe Forschzent High mode microwave resonator for high temperature treatment of materials
US5834744A (en) * 1997-09-08 1998-11-10 The Rubbright Group Tubular microwave applicator
US6092924A (en) 1998-02-10 2000-07-25 Denver Instrument Company Microwave moisture analyzer: apparatus and method
US6084226A (en) * 1998-04-21 2000-07-04 Cem Corporation Use of continuously variable power in microwave assisted chemistry

Also Published As

Publication number Publication date
US6320170B1 (en) 2001-11-20
US6521876B2 (en) 2003-02-18
EP1214582B1 (en) 2014-07-16
AU7580400A (en) 2001-04-17
CA2384882C (en) 2006-11-28
WO2001020312A2 (en) 2001-03-22
WO2001020312A3 (en) 2001-11-22
EP1214582B9 (en) 2015-02-18
US20010032845A1 (en) 2001-10-25
EP1214582A2 (en) 2002-06-19
JP4777566B2 (en) 2011-09-21
JP2003509690A (en) 2003-03-11

Similar Documents

Publication Publication Date Title
CA2384882A1 (en) Microwave volatiles analyzer with high efficiency cavity
CA2250434A1 (en) Microwave oven heating element having broken loops
AU4407293A (en) Variable frequency ultrasonic generator with constant power output
CA2154329A1 (en) Microwave oven
AU2001276986A1 (en) Tunable microwave devices with auto-adjusting matching circuit
DE69841775D1 (en) RF POWER ARRANGEMENT WITH VOLTAGE-CONTROLLED LINEARITY
AU6538790A (en) High frequency matrix transformer power converter module
GB0100082D0 (en) Standing wave particle beam accelerator with switchable beam energy
AU7576598A (en) Intra-cavity and inter-cavity harmonics generation in high power lasers
GB2281656B (en) Radio frequency power amplification
EP0627757A3 (en) High frequency vacuum tube with closely spaced cathode and non-emissive grid.
AU1313600A (en) Efficient solid-state high frequency power amplifier structure
CA2227954A1 (en) A power supply for discharge lamps with balanced resonant circuit
CA2295413A1 (en) Defrosting method for a microwave oven
GB2325577B (en) A high frequency amplifier with a guard circuit and a radio wave transmission apparatus including the same
GB2327840B (en) Microwave oven with independently operable turntable
CA2225855A1 (en) High-frequency amplifier
DE69617248D1 (en) ELECTRIC COOKER
CA2450252A1 (en) Microwave delivery system for a cooking appliance
AU2723201A (en) Ion cyclotron and converter and radio power microwave generator
GB2327807B (en) Microwave oven equipped with a structurally simple apparatus for generating a microwave frequency energy
AU5903596A (en) Slow-wave high-power discharge cavity operating in the radio frequency range
CA2484063A1 (en) Food cooking oven
Bocharov et al. Frequency multiplication employing synthesized nonlinear reactive elements.
RU94029963A (en) Microwave oven

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20200916